Gravity control for gas-engine feed



E. W. PEERY. GRAVITY CONTROL FOR GAS ENGINE FEED. APPLICATION FILED SEPT.27, 1918.

1 85 1 1 23 Patented Aug. 31, 1920..

2 SHEETSSHEET I.

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E. W. PEERY. GRAVITY CONTROL FOR GAS ENGINE FEED. APPLICATION FILED SEPT-27, 1918.

1,351, 123. atented Aug. 31, 1920.

2 SHEETSSHEET 2.

avwmatoz atto'cmu o EMORY WILLIS PEERY, F LYNCI-IBURG, VIRGINIA.

GRAVITY CONTROL FOR GAS-ENGINE FEED.

Specification of Letters Patent.

Patented Aug. 31,1920.

Application filed September 27, 1918. Serial No. 255,925.

To all whom it may concern:

Be it known that I, EMORY W. PEERY, a

, citizen of the United 'States, residing at 'herein disclosed Lynchburg, in the county of Campbell and State of Virginia, have invented a new and useful Gravity Control for Gas -Engine Feed, of Which the following is a specification.

The subject of this invention is a gravity control for gas engine feed, and is intended for use on engines designed for driving motor vehicles, and the like.

The main object of the invention is the provision of-automatic means for controlling the fuel supply of an engine.

Another object of the invention is the provision of means for limiting the movement of-the controlling means.

The invention also contemplates generally improving the construction and enhancing the utility of gravity controls.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention can be made within the scope of what is claimed without departing from the spirit of the'invention.

A practical embodiment of the invention is illustrated in the accompanying drawings, wherein I Figure 1 is a view in side elevation of a device constructed in accordance with the invention;

Fig. 2 is a view partly in elevation, partly,

in vertical longitudinal section of the same;

Fig. 3 is a diagrammatic view of the device applied to an automobile, and showing the position assumed by the device when the vehicle is descending a hill;

Fig. 4 is a similar view, showing the position assumed by the device when the vehicle is ascending a hill;

Fig. 5 is an enlarged diagrammatic view of the device, showing the same in position to close the throttle; v

Fig. 6 .is a detail view and partly in section of trol. 1

Referring to the drawings by numerals of reference An ordinary motor vehicle or automoblle partly in elevation, the foot lever conis indicated by the numeral 1, and this vehicle is equipped with a motor indicated conventionally at 2, the motor being equipped with an intake manifold 3, from which is hung the carbureter 4.

Secured to any suitable part, such as the carbureter 4, by means of tap -bolts or otherwise, is a substantially triangular frame 5, the legs of which straddle the carbureter, and the base of which is situated below the carbureter, and spaced therefrom. The base 0ft e frame is curved and provided along its inner edge with a rack 6, for a purpose to be described.

A throttle valve 7, of the butterfly variety, is provided in the mixing chamber of the carbureter, and upon one outwardly extending end of the stem of this valve is rigidly secured a pinion 8. The pinion 8 meshes with a segmental gear 9 formed at the head of a rod 10, with which it is integral or to which it is rigidly secured. The rod 10 is pivoted, adjacent its upper end, on a stub 11 projecting outwardly from the carbureter 4 so that the rod 10 may oscillate freely about such pivot point.

In order that the oscillations of the rod 10 may be limited or controlled, a pin 12 is secured in and projects at right angles to one face of the rod, and this pin projects within an arcuate slot formed in the lower portion of a pair of frames 13, which frames are pivotally mounted on the stub 11 to oscillate thereabout. The positions of the frames 13 may be changed in any suitable manner, as by means of a rod 14, one end of which is pivotally secured to one frame, and the other end of which is located at the steering post of the vehicle 1, and is controlled by any suitable means there located, such means not being shown as the same forms no part of this invention.

Another controlling rod 15 may also have one end pivotally attached to the other frame 13, and its other end pivotally attached to a foot treadle 18, which is mounted on the foot board of the vehicle 1.

By moving either rod 14: or 15 longitudinally the position of its frame 13 will be changed so that the pin 12 will come into contact with the respective ends of the slots and limit the movement of the rod 10 to 1 selected positions in either direction.

A shaft 10' extends through the lower end of the rod 10, in which it is journaled, and

on each end of this shaft is affixed a weight disk 01' wheel 16, which is in positionto travel beside the base of the frame 5. Also secured to the shaft 10, and resting against the respective disks 16, are pinions 17, which may be formed integral with the disk 16 if desired. The pinions 17 mesh with the rack 6 and tend to retard the initial'movements of the rod 10, so that oscillation will not take place upon every slight change of position of the device or the vehicle to which it is applied.

The operation is as follows :'Ihe device is attached to a carbureter, as described, and the different positions assumed by the vehicle, due to. the grade of the road, will cause the rod 10 to oscillate to one side or the other to either open or close the throttle valve.

From Fig. 3 it will be evident that, when the vehicle is going down hill, and little or no fuel is required for the motor, the rod 10 has assumed such a position as to close the throttle. When going up hill, on the other hand, as indicated in Fig. 1,- the rod has assumed a position to openthe throttle valve and allow a full supply of fuel to the motor.

The rod 10 may be restrained from fully opening or fully closing the throttle by means of the rods 1 1 or 15, as heretofore described, and the throttle may be independently operated by means of these rods, using them to swing the frame 13 to contact pin 12, and so swing the rod 10 and open or close the throttle.

What I claim is 1. A gravity control for gas engine feed, including a carbureter, a valve therein, a

- gear secured to the stem of the valve, a segmovable about the axis of movement of the I rod and having matching slots concentric with said axis, a pin projecting from the rod and into the slots, separate means for independently operating the frames, a stationary arcuate rack, and a combined weight and gear carried by the rod and engaging the rack for retarding the initial movements.

of the rod.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two-witnesses.

EMORY WILLIS PEERY.

Witnesses:

D. It. CHAMBERS, F. A. LEE. 

